Contractors for Concrete provides a free concrete calculator that estimates volume from the dimensions of a planned pour.
Tool description updated September 25, 2026 to reflect the current calculator.
What does the calculator provide?
The calculator provides concrete volume in cubic yards and cubic feet, a separate planning allowance, and approximate bag quantities. Measurement diagrams explain which dimensions to enter. You can copy or download a summary to discuss with a supplier or contractor.
Use the cost guides separately for published planning price ranges. The volume calculator does not provide a local installation quote or specify the correct slab design.
How can you use it?
Open the concrete volume calculator, choose a shape, and enter your dimensions. Confirm the final order quantity and project requirements with your supplier or contractor.